Delivery time depends on destination, logistics mode and other factors such as size and weight of the product. We usually ship within 2 working days after the full payment is received. We use DHL. To return your defective product, please email us at email@example.com in order to give you our supplier’s and/or vendor’s full shipping address. Please do not return your product to our New York office. Please note that you will be responsible for paying for your own shipping costs for returning your item, and shipping costs are non-refundable. If you receive a refund, the cost of return shipping will be deducted from your refund. Depending of your receiving address, the time for your exchanged product to reach you, may vary. If you are shipping an item over $80, you should consider using a trackable shipping service or purchasing shipping insurance. We don’t guarantee that we will receive your returned item because we have no control over the shipping company that you will be using. The primary responsibility for the use or operation of a robot (or its technology) in the presence of human beings falls on the user. All products sold by www.OzRobotics.com are of good quality and are considered as being reliable. On the other hand, emoro warns against their use in an application, in a medical tool or system, in any domestic, commercial or industrial product where an error could result in harm or even death of a human being or an animal.